3Com 3C900B Installation And Operating Instructions Manual page 24

3. Find the jumper shunts (small black plastic
pieces) on the COM port and IRQ jumper
pins on your modem. They should be in
roughly the area indicated in the following
illustration.
When doing a "Plug and Play" installation,
the jumper shunts should be placed so that
they are hanging from single jumper pins
rather than on pairs of pins. Move your
20
M I
ODEM NSTALLATION WITH
W 95
INDOWS
jumper shunts so they are hanging as in the
following diagram.
NOTE:
If you need to move the jumper
shunts, grasp them with a tweezers or a needle-
nosed pliers. DO NOT grasp too firmly, however,
or you may crush the jumper shunts. If a jumper
shunt seems stuck, try gently rocking it back and
forth as you lift.